Cloud

Linux Server Security Hardening Checklist for Production

2026-06-06 • 1 min read

Securing your production server is a continuous process. An unhardened cloud server is a prime target for automated brute-force attacks and security vulnerabilities.

Start by disabling password-based authentication and enforcing SSH key-only access. Change the default SSH port to minimize automated port scanning attempts.

Configure a robust firewall using UFW or iptables, allowing only necessary ports like 80, 443, and your custom SSH port. Close all database ports to external access.

Install and configure fail2ban to automatically ban IPs showing suspicious connection patterns. Set up automated security updates to patch operating system vulnerabilities.

Securing cloud server architectures requires expert configuration and ongoing system monitoring. Tastics Solutions provides professional server setup, management, and security hardening services.